Originally Posted by

**coolerimmortal**
Ah. I missed the equilateral bit.

Anyways, if EB=5, then just make a perpindicular segement from E to a point we can call X. Triangle XEB is right. EB=5, BX=1.5. 25-2.25=22.75. So it's 8.5 times the square root of 22.75. Do that with a calculator and you have the answer.

That has to be correct, given the numbers we were given...If the triangles are equilateral, the BX has to equal 1.5...and since EB=5, we know root 22.75 is correct. So the first answer is the square root of 22.75, the second answer is root 22.75 times 8.5. Root 22.75 is about 4.77, so it's 4.77 times 8.5...that makes it 40.545...That's the answer.

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